- The Dawn of Astronomy: A Study of Temple Worship and Mythology of the Ancient Egyptians
- The Solar Temple of Amen-Ra at Karnak
- Contributions to Solar Physics
- Elements of Astronomy: Accompanied with Numerous Illustrations, a Colored Representation of the Solar, Stellar, and Nebular Spectra, and Cele
- Recent and Coming Eclipses: being Notes on the Total Solar Eclipses of 1893, 1896 and 1898